ATLANTA – Confidence never has been a problem for Yuriorkis Gamboa.

From the time the three-division champion defected from Cuba, Gamboa’s belief in his skills, speed and power seemingly has never wavered. Gervonta Davis senses Gamboa might even have grown overconfident in advance of their 12-round lightweight title fight Saturday night at State Farm Arena.

Davis disputed Gamboa’s claim Thursday that he didn’t bother watching Davis knock out Ricardo Nunez in the main event July 28 in Baltimore, the same night Gamboa stopped Rocky Martinez in the second round. Showtime televised both bouts and it was widely assumed Davis (22-0, 21 KOs) and Gamboa (30-2, 18 KOs) would meet next if they won their respective fights that night.

Gamboa explained Thursday that he had to take a post-fight drug test ordered by the Maryland State Athletic Commission right after he beat Martinez. Because Davis annihilated Nunez so quickly, Gamboa didn’t have a chance to scout any of Davis’ fight from inside a sold-out Royal Farms Arena that night.

“I’m pretty sure he watched it,” a disbelieving Davis said during a press conference Thursday. “He’s just saying it to try to be cocky. But for sure he watched it. If he didn’t watch it that night, he definitely watched it leading into this fight coming up. We shall see December the 28th, Saturday night. He been a little cocky, so I gotta tax that ass.”

The Cuban-born Gamboa disregarded Davis’ trash talk, which drew laughter from many that attended the press conference at The Sheraton Atlanta.

“My job isn’t to pay attention to what they’re saying, what they’re talking about, whether they think I’m being cocky or not,” said Gamboa, who turned 38 on Monday. “My focus, and my only focus, is to go in there at 150 percent and give my all December 28th. So, I really don’t care about the chatter. That means nothing.”

The 2004 Olympic gold medalist hasn’t put much stock in the lopsided odds, either. Most Internet and Las Vegas sports books list the 25-year-old Davis as a 20-1 favorite to win their fight for a vacant version of the WBA’s lightweight title.

Davis will look to extend his knockout streak to 14 in the main event of Showtime’s three-fight telecast (9 p.m. ET/6 p.m. PT).

The premium cable network’s tripleheader also will include a 12-round, 175-pound championship match that’ll pit WBA world light heavyweight champ Jean Pascal (34-6-1, 20 KOs, 1 NC), of Laval, Quebec, versus Sweden’s Badou Jack (22-2-3, 13 KOs). The show will start with a 10-rounder between former IBF super middleweight champ Jose Uzcategui (29-3, 24 KOs), of Tijuana, Mexico, and Lionell Thompson (21-5, 12 KOs), of Buffalo, New York.

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.